Finding the Fourth Proportional to 1,105.86, 1,656.36 and 454.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.86 : 1,656.36 = 454.62 : x
2. Step 2: Convert to fraction form
   1,105.86/1,656.36 = 454.62/x
3. Step 3: Cross multiply
   1,105.86x = 1,656.36 × 454.62
4. Step 4: Simplify right side
   1,105.86x = 753,014.38
5. Step 5: Solve for x
   x = 753,014.38/1,105.86
6. Step 6: Final answer
   x = 680.93